A technology for suppressing a performance degradation of a solar battery caused by PID is provided. A conversion device includes a DC/DC converter and a control part. A solar battery is connected to an input end of the DC/DC converter. When direct-current power generated by the solar battery is converted and output, the DC/DC converter makes a potential of a negative electrode of the solar battery to be higher than a potential in a negative electrode of the output when the power input from the solar battery exceeds a prescribed value. The control part changes a voltage of the power output from the solar battery to detect a peak value of the power, and stops the operation of the DC/DC converter when the peak value is smaller than the prescribed value.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A conversion device, comprising: a DC/DC converter, in which a solar battery is connected to an input end of the DC/DC converter, wherein when direct-current power generated by the solar battery is converted and output, the DC/DC converter makes a potential of a negative electrode of the solar battery to be higher than a potential in a negative electrode of an output of the DC/DC converter when the power input from the solar battery exceeds a prescribed value; and a control part, wherein when the voltage of a power output from the solar battery changes, the control part detects a peak value of the power and stops the operation of the DC/DC converter when the peak value is smaller than the prescribed value.
2. A conversion device, comprising: a DC/DC converter, in which a solar battery is connected to an input end of the DC/DC converter, wherein when direct-current power generated by the solar battery is converted and output, the DC/DC converter makes a potential of a negative electrode of the solar battery to be higher than a potential in a negative electrode of an output of the DC/DC converter when a voltage of the power input from the solar battery exceeds a prescribed value; and a control part, wherein when the voltage of a power output from the solar battery changes, the control part detects a peak point of the power and stops the operation of the DC/DC converter when the voltage at the peak point is smaller than the prescribed value.
3. A conversion device, comprising: a DC/DC converter, in which a solar battery is connected to an input end of the DC/DC converter, wherein when direct-current power generated by the solar battery is converted and output, the DC/DC converter makes a potential of a negative electrode of the solar battery to be higher than a potential in a negative electrode of an output of the DC/DC converter when the power input from the solar battery exceeds a prescribed value; a control part, which acquires information indicating weather or illumination and stops the operation of the DC/DC converter when the power from the solar battery estimated based on the information is smaller than the prescribed value.
4. A hybrid power supply system comprising: a solar battery; a conversion device according to claim 1 , which is connected to the solar battery; and a power storage device comprising a storage battery connected to an output of the conversion device.
5. A hybrid power supply system comprising: a solar battery; a conversion device according to claim 2 , which is connected to the solar battery; and a power storage device comprising a storage battery connected to an output of the conversion device.
6. A hybrid power supply system comprising: a solar battery; a conversion device according to claim 3 , which is connected to the solar battery; and a power storage device comprising a storage battery connected to an output of the conversion device.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
January 18, 2019
March 30, 2021
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